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Products  |  Mechatronics  |  Automation  |  IA 110
IA 110 Calibrating a Pressure Sensor Show data sheet (pdf file) Print page
Technical Description

  The experimental unit IA 110 can be used to calibrate an electronic pressure sensor under practical conditions.

 

  The test pressure is generated with a conventional piston manometer. The piston is loaded with weight rings and generates a defined test pressure p = Fw/AP, where Fw is the force due to the weights and AP is the cross-sectional area of the piston. A hand-operated spindle is used to relieve the pressure after measurement allowing the piston to return to a rest position. The influence of friction is minimised by rotating the piston during measurement. The test pressure generated in this way is applied to the diaphragm of a pressure sensor. The pressure-dependent electrical output signal is indicated on a digital display.

  The pressure sensor used is a state-of-the-art ceramic measuring cell, in which strain-dependent piezo resistors are mounted on a ceramic diaphragm. The resistors are configured to form a measuring bridge. An integrated amplifier circuit evaluates the pressure-dependent detuning of the measuring bridge and outputs a proportional voltage signal.

  The kit also includes a second pressure sensor in the form of a cutaway model for enhanced clarity. The entire experimental unit is contained in a compact housing, and is easy to handle.

  The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments.

  

Learning Objectives / Experiments

- familiarisation with, and carrying out of 

  the calibration of an electronic pressure sensor
- plotting the sensor output signal dependent on

  the pressure applied
- familiarisation with the design and operation of a

  piezo-resistive electronic pressure sensor
- familiarisation with the installation and connection

  of the pressure sensor
- information on applications, measuring ranges and

  accuracies of typical electronic pressure sensors
 

Features

* Test-pressure generated with dead-weight piston 

  manometer1
* Electronic pressure sensor with ceramic measuring

  cell1
* Plotting a calibration curve1
* Compact experimental unit for group working or

  demonstration

Specification
[1] calibration unit with dead-weight piston manometer and hand-operated spindle
[2] electronic pressure sensor with ceramic measuring cell, integrated amplifier and voltage output
[3] digital display for output signal
[4] additional pressure sensor as cutaway model
[5] set of weights
[6] transmission medium: hydraulic oil
[7] process schematic on front panel
 
Technical Data

Pressure sensor
- measuring range: 0...2,5bar
- supply: 24VDC
- output signal: 0...10VDC

 
Piston manometer with pressure piston
- diameter: 12mm

- number of weights: 5
- pressure graduations: 0,5-1-1,5-2-2,5bar
 

Digital display: 4 1/2 digits

 

Hydraulic oil: HLP ISO 32
 

Dimensions and Weight
LxWxH: 600x450x450mm
Weight: approx. 25kg
Required for Operation

230V, 50/60Hz, 1 phase or  120V, 60Hz/CSA, 1 phase

Scope of Delivery

1 experimental unit

1 set of weights

1 bottle of oil
1 cutaway model of pressure sensor
1 set of instructional material

Order Details
058.11000  IA 110  Calibrating a Pressure Sensor
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© 2005 G.U.N.T. Gerätebau GmbH